Measured values are shown in Table S4
For these individuals, vitamin B12 injections are often the most effective way to restore healthy B12 levels because they bypass the digestive system entirely, delivering the vitamin directly into the bloodstream for maximum absorption (around 95% compared to 25-50% for oral supplements)
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4, the three most frequently reported SOC categories were "Gastrointestinal disorders," "General disorders and administration site conditions," and "Investigations." Notably, while "Injury, poisoning, and procedural complications" and "Nervous system disorders" demonstrated higher reporting frequencies compared to other SOCs, these associations did not reach statistical significance in our analysis, suggesting potential reporting bias or confounding factors that warrant further investigation
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